Version 1.04
March 2011
APEX cbt
Page 18
www.blazeking.com
PREFABRICATED CHIMNEY WITH METAL CHIMNEY SUPPORT AS THIMBLE
For the method of installation to a masonry chimney, it will be necessary to purchase a 12-inch long
section of prefabricated listed chimney to use as a thimble. Purchase a wall spacer, trim collar and wall
band that are manufactured to fit the chimney section you purchase.
The safety features of this system are: the 2-inch air space between the chimney section and
combustible wall, and the 1-inch air space around the chimney connector as it passes through the
chimney section to the chimney.
The location of the opening through the wall to the chimney must leave a minimum 18 inch vertical
clearance between the flue pipe and the ceiling to prevent the ceiling from catching fire.
For instructions on installation of the thimble, refer to chimney manufacturer's instructions.
If an exterior masonry chimney is
used you may have draft problems
due to the chimney being too cold.
Exterior
masonry
chimney’s
should
be
lined
with
a
listed
stainless
steel
liner
for
better
operation of these units.
Fig. 15 Metal Prefabricated Thimble
Fig. 16 Metal Prefabricated Thimble
INSTALLATION INSTRUCTIONS - VENTING
Содержание APEX CBT
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